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Engine Diagnostics in Baltimore from Auto Stop

Check engine light on? That means your car is trying to tell you something. Bring in your car for an engine diagnostic test at Auto Stop when the check engine light goes on, the sooner the better! Learn how we diagnose what’s wrong in our blog.


Engine Diagnostics

Any car with a check engine light has an onboard computer. When something is wrong with the engine, the car’s computer picks it up. It then lights up the check engine light to let you know that it has found a problem that needs to be addressed.

But how do you know what the problem is? That light could stand for anything from a minor fix to a major problem that needs to be fixed right now. This is where we come in. You mechanic has a device that connects to the car’s onboard computer and interfaces with it. This is the engine diagnostic test. When the two are connected, the computer tells the device what’s wrong with the engine in the form of a code. The mechanic then uses a list provided by the manufacturer to see what that code means. Depending on how many problems there are, the computer might give out a number of codes.

This is the easiest way to determine what’s wrong with your car, and takes a very short amount of time. Once the engine diagnostic test figures out the problem, the mechanic can proceed with repairs.

Other lights on your dashboard function in the same way, but you don’t need a computer to figure out what’s wrong when they light up. For example, when the tire pressure light goes on, you know you have low pressure in one of your tires.

One thing you may or may not have known is that the brake light that goes on when you engage the parking brake also will light up if a problem is detected with your brakes. So if that light goes on when the parking brake is off, make sure to bring the car in to the mechanic to get your brakes checked out.

One final important thing to know about the check engine light is that if the light is on, your car will automatically fail emissions. They won’t even run the test, they’ll just fail the vehicle. So, get that light checked out with engine diagnostics before your emissions test!


Auto Stop is your local auto repair shop, serving the Baltimore metro area. We are A+ accredited by the Better Business Bureau. We are also an ARI Fleet repair center for all Fleet Repairs.

Our mechanics are highly trained and use state-of-the-art Automotive diagnostic equipment to pinpoint your particular issues, repair it, and get you back on the road as quickly as possible. We promise to diagnose your auto repair problems in an honest and professional manner and all of our work is 100% guaranteed!

This entry was posted on Friday, April 10th, 2015 at 6:37 pm. Both comments and pings are currently closed.